George North played for Wales in their 14-13 win over France in the final round of the Six Nations

The incident set club and country on a collision course - with Wales coach Warren Gatland backing his man - after he was criticised by Saints coach Alan Gaffney.

A Northampton statement said: "Following a meeting with the club on Monday, George North accepted responsibility for missing a training session ahead of Saints' Aviva Premiership clash with Sale Sharks earlier this month, and has been disciplined internally."

The Wales and British and Irish Lions winger had an encouraging Six Nations campaign after a few years of an on-going injury and concussion nightmare.